hwmon: unchecked return status fixes (batch #4)

PATCH New Jean Delvare 2 participants 6 messages Aug 31, 2006 – Sep 23, 2006

Subsystems (5)

Hardware monitoring IT87 hardware monitoring driver LM90 hardware monitor driver F71805F hardware monitoring driver +1 more subsystems

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Jean Delvare

author

2006-08-31 20:06 UTC #0 lore raw

PATCH 1/1 hwmon: unchecked return status fixes (batch #4)

This patch fixes up some hwmon drivers so that they no longer ignore return status from device_create_file(). All 4 drivers were tested.

Note 1: f71805f actually checked the status from device_create_file already. However it did not remove the files on device destruction. It was also an oportunity to use sysfs_create/remove_group instead of hand-made loops. This makes the changes much more important but I think the result is worth it.

Note 2: This patch applies on top of another one which I just posted to the lm-sensors list which adds individual alarm files to all 4 drivers.

Signed-off-by Jean Delvare <khali at linux-fr.org>

---
 drivers/hwmon/f71805f.c |  323 +++++++++++++++++++++++++++++------------------
 drivers/hwmon/lm63.c    |   88 ++++++++-----
 drivers/hwmon/lm83.c    |  124 +++++++++---------
 drivers/hwmon/lm90.c    |   82 ++++++------
 4 files changed, 353 insertions(+), 264 deletions(-)

drivers/hwmon/lm90.c +41 ~~-41~~

@@ -366,6 +366,33 @@
 /* Raw alarm file for compatibility */
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
+static struct attribute *lm90_attributes[] = {
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit.dev_attr.attr,
+	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,
+
+	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_input_fault.dev_attr.attr,
+	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
+	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+	&dev_attr_alarms.attr,
+	NULL
+};
+
+static const struct attribute_group lm90_group = {
+	.attrs = lm90_attributes,
+};
+
 /* pec used for ADM1032 only */
 static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
 			char *buf)

@@ -589,54 +616,25 @@
 	lm90_init_client(new_client);
 
 	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &lm90_group)))
+		goto exit_detach;
+	if (new_client->flags & I2C_CLIENT_PEC) {
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_pec)))
+			goto exit_remove_files;
+	}
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_input.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_input.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_min.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_min.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_max.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_max.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_crit.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_crit.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_crit_hyst.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_crit_hyst.dev_attr);
-
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_input_fault.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_min_alarm.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_min_alarm.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_max_alarm.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_max_alarm.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp1_crit_alarm.dev_attr);
-	device_create_file(&new_client->dev,
-			   &sensor_dev_attr_temp2_crit_alarm.dev_attr);
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-
-	if (new_client->flags & I2C_CLIENT_PEC)
-		device_create_file(&new_client->dev, &dev_attr_pec);
-
 	return 0;
 
+exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &lm90_group);
+	device_remove_file(&new_client->dev, &dev_attr_pec);
 exit_detach:
 	i2c_detach_client(new_client);
 exit_free:

@@ -669,6 +667,8 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &lm90_group);
+	device_remove_file(&client->dev, &dev_attr_pec);
 
 	if ((err = i2c_detach_client(client)))
 		return err;

drivers/hwmon/f71805f.c +202 ~~-121~~

358 lines not on this page · raw message

drivers/hwmon/lm63.c +51 ~~-37~~

113 lines not on this page · raw message

drivers/hwmon/lm83.c +59 ~~-65~~

153 lines not on this page · raw message

Signature · 1 line

Jean Delvare

Jean Delvare

author

2006-09-03 13:17 UTC #1 lore raw

PATCH 1/1 hwmon: unchecked return status fixes (batch #5)

This patch fixes up some hwmon drivers so that they no longer ignore return status from device_create_file(). I could only test it87.

Note: This applies on top of my recent set of it87 patches (adding support for the IT8716F and IT8718F amngst others.)

Signed-off-by Jean Delvare <khali at linux-fr.org>

---
 drivers/hwmon/fscher.c  |  106 +++++++++------------
 drivers/hwmon/fscpos.c  |   75 +++++++++------
 drivers/hwmon/gl518sm.c |   74 +++++++++------
 drivers/hwmon/gl520sm.c |  128 +++++++++++++++++---------
 drivers/hwmon/it87.c    |  234 ++++++++++++++++++++++++++++++-----------------
 5 files changed, 368 insertions(+), 249 deletions(-)

drivers/hwmon/it87.c +149 ~~-85~~

@@ -37,6 +37,7 @@
 #include <linux/hwmon-vid.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <asm/io.h>

@@ -758,8 +759,6 @@
 	return count;
 }
 static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg);
-#define device_create_file_vrm(client) \
-device_create_file(&client->dev, &dev_attr_vrm)
 
 static ssize_t
 show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf)

@@ -768,8 +767,88 @@
 	return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm));
 }
 static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL);
-#define device_create_file_vid(client) \
-device_create_file(&client->dev, &dev_attr_cpu0_vid)
+
+static struct attribute *it87_attributes[] = {
+	&sensor_dev_attr_in0_input.dev_attr.attr,
+	&sensor_dev_attr_in1_input.dev_attr.attr,
+	&sensor_dev_attr_in2_input.dev_attr.attr,
+	&sensor_dev_attr_in3_input.dev_attr.attr,
+	&sensor_dev_attr_in4_input.dev_attr.attr,
+	&sensor_dev_attr_in5_input.dev_attr.attr,
+	&sensor_dev_attr_in6_input.dev_attr.attr,
+	&sensor_dev_attr_in7_input.dev_attr.attr,
+	&sensor_dev_attr_in8_input.dev_attr.attr,
+	&sensor_dev_attr_in0_min.dev_attr.attr,
+	&sensor_dev_attr_in1_min.dev_attr.attr,
+	&sensor_dev_attr_in2_min.dev_attr.attr,
+	&sensor_dev_attr_in3_min.dev_attr.attr,
+	&sensor_dev_attr_in4_min.dev_attr.attr,
+	&sensor_dev_attr_in5_min.dev_attr.attr,
+	&sensor_dev_attr_in6_min.dev_attr.attr,
+	&sensor_dev_attr_in7_min.dev_attr.attr,
+	&sensor_dev_attr_in0_max.dev_attr.attr,
+	&sensor_dev_attr_in1_max.dev_attr.attr,
+	&sensor_dev_attr_in2_max.dev_attr.attr,
+	&sensor_dev_attr_in3_max.dev_attr.attr,
+	&sensor_dev_attr_in4_max.dev_attr.attr,
+	&sensor_dev_attr_in5_max.dev_attr.attr,
+	&sensor_dev_attr_in6_max.dev_attr.attr,
+	&sensor_dev_attr_in7_max.dev_attr.attr,
+
+	&sensor_dev_attr_temp1_input.dev_attr.attr,
+	&sensor_dev_attr_temp2_input.dev_attr.attr,
+	&sensor_dev_attr_temp3_input.dev_attr.attr,
+	&sensor_dev_attr_temp1_max.dev_attr.attr,
+	&sensor_dev_attr_temp2_max.dev_attr.attr,
+	&sensor_dev_attr_temp3_max.dev_attr.attr,
+	&sensor_dev_attr_temp1_min.dev_attr.attr,
+	&sensor_dev_attr_temp2_min.dev_attr.attr,
+	&sensor_dev_attr_temp3_min.dev_attr.attr,
+	&sensor_dev_attr_temp1_type.dev_attr.attr,
+	&sensor_dev_attr_temp2_type.dev_attr.attr,
+	&sensor_dev_attr_temp3_type.dev_attr.attr,
+
+	&dev_attr_alarms.attr,
+	NULL
+};
+
+static const struct attribute_group it87_group = {
+	.attrs = it87_attributes,
+};
+
+static struct attribute *it87_attributes_opt[] = {
+	&sensor_dev_attr_fan1_input16.dev_attr.attr,
+	&sensor_dev_attr_fan1_min16.dev_attr.attr,
+	&sensor_dev_attr_fan2_input16.dev_attr.attr,
+	&sensor_dev_attr_fan2_min16.dev_attr.attr,
+	&sensor_dev_attr_fan3_input16.dev_attr.attr,
+	&sensor_dev_attr_fan3_min16.dev_attr.attr,
+
+	&sensor_dev_attr_fan1_input.dev_attr.attr,
+	&sensor_dev_attr_fan1_min.dev_attr.attr,
+	&sensor_dev_attr_fan1_div.dev_attr.attr,
+	&sensor_dev_attr_fan2_input.dev_attr.attr,
+	&sensor_dev_attr_fan2_min.dev_attr.attr,
+	&sensor_dev_attr_fan2_div.dev_attr.attr,
+	&sensor_dev_attr_fan3_input.dev_attr.attr,
+	&sensor_dev_attr_fan3_min.dev_attr.attr,
+	&sensor_dev_attr_fan3_div.dev_attr.attr,
+
+	&sensor_dev_attr_pwm1_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm2_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm3_enable.dev_attr.attr,
+	&sensor_dev_attr_pwm1.dev_attr.attr,
+	&sensor_dev_attr_pwm2.dev_attr.attr,
+	&sensor_dev_attr_pwm3.dev_attr.attr,
+
+	&dev_attr_vrm.attr,
+	&dev_attr_cpu0_vid.attr,
+	NULL
+};
+
+static const struct attribute_group it87_group_opt = {
+	.attrs = it87_attributes_opt,
+};
 
 /* This function is called when:
      * it87_driver is inserted (when this module is loaded), for each

@@ -948,107 +1027,78 @@
 	it87_init_client(new_client, data);
 
 	/* Register sysfs hooks */
-	data->class_dev = hwmon_device_register(&new_client->dev);
-	if (IS_ERR(data->class_dev)) {
-		err = PTR_ERR(data->class_dev);
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group)))
 		goto ERROR3;
-	}
-
-	device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr);
-	device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr);
 
 	/* Do not create fan files for disabled fans */
 	if (data->type = it8716 || data->type = it8718) {
 		/* 16-bit tachometers */
 		if (data->has_fan & (1 << 0)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan1_input16.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan1_min16.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan1_input16.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan1_min16.dev_attr)))
+				goto ERROR4;
 		}
 		if (data->has_fan & (1 << 1)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan2_input16.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan2_min16.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan2_input16.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan2_min16.dev_attr)))
+			 	goto ERROR4;
 		}
 		if (data->has_fan & (1 << 2)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan3_input16.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan3_min16.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan3_input16.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan3_min16.dev_attr)))
+				goto ERROR4;
 		}
 	} else {
 		/* 8-bit tachometers with clock divider */
 		if (data->has_fan & (1 << 0)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan1_input.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan1_min.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan1_div.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan1_input.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan1_min.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan1_div.dev_attr)))
+				goto ERROR4;
 		}
 		if (data->has_fan & (1 << 1)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan2_input.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan2_min.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan2_div.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan2_input.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan2_min.dev_attr))
+			 || (device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan2_div.dev_attr)))
+				goto ERROR4;
 		}
 		if (data->has_fan & (1 << 2)) {
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan3_input.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan3_min.dev_attr);
-			device_create_file(&new_client->dev,
-				&sensor_dev_attr_fan3_div.dev_attr);
+			if ((err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan3_input.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan3_min.dev_attr))
+			 || (err = device_create_file(&new_client->dev,
+			     &sensor_dev_attr_fan3_div.dev_attr)))
+				goto ERROR4;
 		}
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_alarms);
 	if (enable_pwm_interface) {
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr);
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr);
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr);
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr);
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr);
-		device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr);
+		if ((err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm1_enable.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm2_enable.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm3_enable.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm1.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm2.dev_attr))
+		 || (err = device_create_file(&new_client->dev,
+		     &sensor_dev_attr_pwm3.dev_attr)))
+			goto ERROR4;
 	}
 
 	if (data->type = it8712 || data->type = it8716

@@ -1056,12 +1106,24 @@
 		data->vrm = vid_which_vrm();
 		/* VID reading from Super-I/O config space if available */
 		data->vid = vid_value;
-		device_create_file_vrm(new_client);
-		device_create_file_vid(new_client);
+		if ((err = device_create_file(&new_client->dev,
+		     &dev_attr_vrm))
+		 || (err = device_create_file(&new_client->dev,
+		     &dev_attr_cpu0_vid)))
+			goto ERROR4;
+	}
+
+	data->class_dev = hwmon_device_register(&new_client->dev);
+	if (IS_ERR(data->class_dev)) {
+		err = PTR_ERR(data->class_dev);
+		goto ERROR4;
 	}
 
 	return 0;
 
+ERROR4:
+	sysfs_remove_group(&new_client->dev.kobj, &it87_group);
+	sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt);
 ERROR3:
 	i2c_detach_client(new_client);
 ERROR2:

@@ -1079,6 +1141,8 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &it87_group);
+	sysfs_remove_group(&client->dev.kobj, &it87_group_opt);
 
 	if ((err = i2c_detach_client(client)))
 		return err;

drivers/hwmon/fscher.c +47 ~~-59~~

137 lines not on this page · raw message

drivers/hwmon/fscpos.c +46 ~~-29~~

106 lines not on this page · raw message

drivers/hwmon/gl518sm.c +44 ~~-30~~

105 lines not on this page · raw message

drivers/hwmon/gl520sm.c +82 ~~-46~~

188 lines not on this page · raw message

Signature · 1 line

Jean Delvare

Jean Delvare

author

2006-09-22 11:45 UTC #2 lore raw

PATCH 1/1 hwmon: unchecked return status fixes

In reply to Jean Delvare

Fix up 5 more hwmon drivers so that they no longer ignore return status from device_create_file(). Untested.

Signed-off-by Jean Delvare <khali at linux-fr.org>

---
 drivers/hwmon/atxp1.c   |   24 +++++++++--
 drivers/hwmon/ds1621.c  |   27 +++++++++----
 drivers/hwmon/max1619.c |   32 +++++++++++----
 drivers/hwmon/sis5595.c |  100 +++++++++++++++++++++++++++++++++--------------
 drivers/hwmon/via686a.c |   82 +++++++++++++++++++++++----------------
 5 files changed, 180 insertions(+), 85 deletions(-)

drivers/hwmon/atxp1.c +19 -5

@@ -250,6 +250,17 @@
 */
 static DEVICE_ATTR(gpio2, S_IRUGO | S_IWUSR, atxp1_showgpio2, atxp1_storegpio2);
 
+static struct attribute *atxp1_attributes[] = {
+	&dev_attr_gpio1.attr,
+	&dev_attr_gpio2.attr,
+	&dev_attr_cpu0_vid.attr,
+	NULL
+};
+
+static const struct attribute_group atxp1_group = {
+	.attrs = atxp1_attributes,
+};
+
 
 static int atxp1_attach_adapter(struct i2c_adapter *adapter)
 {

@@ -319,21 +330,23 @@
 		goto exit_free;
 	}
 
+	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &atxp1_group)))
+		goto exit_detach;
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_gpio1);
-	device_create_file(&new_client->dev, &dev_attr_gpio2);
-	device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
-
 	dev_info(&new_client->dev, "Using VRM: %d.%d\n",
 			 data->vrm / 10, data->vrm % 10);
 
 	return 0;
 
+exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &atxp1_group);
 exit_detach:
 	i2c_detach_client(new_client);
 exit_free:

@@ -348,6 +361,7 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &atxp1_group);
 
 	err = i2c_detach_client(client);

drivers/hwmon/ds1621.c +19 -8

@@ -178,6 +178,18 @@
 static DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO , show_temp_min, set_temp_min);
 static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp_max, set_temp_max);
 
+static struct attribute *ds1621_attributes[] = {
+	&dev_attr_alarms.attr,
+	&dev_attr_temp1_input.attr,
+	&dev_attr_temp1_min.attr,
+	&dev_attr_temp1_max.attr,
+	NULL
+};
+
+static const struct attribute_group ds1621_group = {
+	.attrs = ds1621_attributes,
+};
+
 
 static int ds1621_attach_adapter(struct i2c_adapter *adapter)
 {

@@ -253,21 +265,19 @@
 	ds1621_init_client(new_client);
 
 	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &ds1621_group)))
+		goto exit_detach;
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-	device_create_file(&new_client->dev, &dev_attr_temp1_input);
-	device_create_file(&new_client->dev, &dev_attr_temp1_min);
-	device_create_file(&new_client->dev, &dev_attr_temp1_max);
-	
 	return 0;
 
-/* OK, this is not exactly good programming practice, usually. But it is
-   very code-efficient in this case. */
+      exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &ds1621_group);
       exit_detach:
 	i2c_detach_client(new_client);
       exit_free:

@@ -282,6 +292,7 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &ds1621_group);
 
 	if ((err = i2c_detach_client(client)))
 		return err;

drivers/hwmon/max1619.c +23 -9

@@ -172,6 +172,22 @@
 	set_temp_hyst2);
 static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
 
+static struct attribute *max1619_attributes[] = {
+	&dev_attr_temp1_input.attr,
+	&dev_attr_temp2_input.attr,
+	&dev_attr_temp2_min.attr,
+	&dev_attr_temp2_max.attr,
+	&dev_attr_temp2_crit.attr,
+	&dev_attr_temp2_crit_hyst.attr,
+
+	&dev_attr_alarms.attr,
+	NULL
+};
+
+static const struct attribute_group max1619_group = {
+	.attrs = max1619_attributes,
+};
+
 /*
  * Real code
  */

@@ -273,22 +289,19 @@
 	max1619_init_client(new_client);
 
 	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &max1619_group)))
+		goto exit_detach;
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_temp1_input);
-	device_create_file(&new_client->dev, &dev_attr_temp2_input);
-	device_create_file(&new_client->dev, &dev_attr_temp2_min);
-	device_create_file(&new_client->dev, &dev_attr_temp2_max);
-	device_create_file(&new_client->dev, &dev_attr_temp2_crit);
-	device_create_file(&new_client->dev, &dev_attr_temp2_crit_hyst);
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-
 	return 0;
 
+exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &max1619_group);
 exit_detach:
 	i2c_detach_client(new_client);
 exit_free:

@@ -318,6 +331,7 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &max1619_group);
 
 	if ((err = i2c_detach_client(client)))
 		return err;

drivers/hwmon/sis5595.c +70 ~~-30~~

125 lines not on this page · raw message

drivers/hwmon/via686a.c +49 ~~-33~~

107 lines not on this page · raw message

Signature · 1 line

Jean Delvare

Jean Delvare

author

2006-09-23 12:04 UTC #3 lore raw

PATCH 1/1 hwmon: unchecked return status fixes

In reply to Jean Delvare

Fix up 2 more hwmon drivers so that they no longer ignore return status from device_create_file(). Untested.

Signed-off-by Jean Delvare <khali at linux-fr.org>

---
 drivers/hwmon/smsc47m1.c   |   78 ++++++++++++++++++-----
 drivers/hwmon/smsc47m192.c |  150 +++++++++++++++++++++++++-------------------
 2 files changed, 145 insertions(+), 83 deletions(-)

drivers/hwmon/smsc47m1.c +60 ~~-18~~

@@ -35,6 +35,7 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <asm/io.h>
 
 /* Address is autodetected, there is no default value */

@@ -347,6 +348,30 @@
 
 static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
 
+/* Almost all sysfs files may or may not be created depending on the chip
+   setup so we create them individually. It is still convenient to define a
+   group to remove them all at once. */
+static struct attribute *smsc47m1_attributes[] = {
+	&dev_attr_fan1_input.attr,
+	&dev_attr_fan1_min.attr,
+	&dev_attr_fan1_div.attr,
+	&dev_attr_fan2_input.attr,
+	&dev_attr_fan2_min.attr,
+	&dev_attr_fan2_div.attr,
+
+	&dev_attr_pwm1.attr,
+	&dev_attr_pwm1_enable.attr,
+	&dev_attr_pwm2.attr,
+	&dev_attr_pwm2_enable.attr,
+
+	&dev_attr_alarms.attr,
+	NULL
+};
+
+static const struct attribute_group smsc47m1_group = {
+	.attrs = smsc47m1_attributes,
+};
+
 static int __init smsc47m1_find(unsigned short *addr)
 {
 	u8 val;

@@ -447,46 +472,62 @@
 	smsc47m1_update_device(&new_client->dev, 1);
 
 	/* Register sysfs hooks */
-	data->class_dev = hwmon_device_register(&new_client->dev);
-	if (IS_ERR(data->class_dev)) {
-		err = PTR_ERR(data->class_dev);
-		goto error_detach;
-	}
-
 	if (fan1) {
-		device_create_file(&new_client->dev, &dev_attr_fan1_input);
-		device_create_file(&new_client->dev, &dev_attr_fan1_min);
-		device_create_file(&new_client->dev, &dev_attr_fan1_div);
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_fan1_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_fan1_min))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_fan1_div)))
+			goto error_remove_files;
 	} else
 		dev_dbg(&new_client->dev, "Fan 1 not enabled by hardware, "
 			"skipping\n");
 
 	if (fan2) {
-		device_create_file(&new_client->dev, &dev_attr_fan2_input);
-		device_create_file(&new_client->dev, &dev_attr_fan2_min);
-		device_create_file(&new_client->dev, &dev_attr_fan2_div);
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_fan2_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_fan2_min))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_fan2_div)))
+			goto error_remove_files;
 	} else
 		dev_dbg(&new_client->dev, "Fan 2 not enabled by hardware, "
 			"skipping\n");
 
 	if (pwm1) {
-		device_create_file(&new_client->dev, &dev_attr_pwm1);
-		device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_pwm1))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_pwm1_enable)))
+			goto error_remove_files;
 	} else
 		dev_dbg(&new_client->dev, "PWM 1 not enabled by hardware, "
 			"skipping\n");
 	if (pwm2) {
-		device_create_file(&new_client->dev, &dev_attr_pwm2);
-		device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_pwm2))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_pwm2_enable)))
+			goto error_remove_files;
 	} else
 		dev_dbg(&new_client->dev, "PWM 2 not enabled by hardware, "
 			"skipping\n");
 
-	device_create_file(&new_client->dev, &dev_attr_alarms);
+	if ((err = device_create_file(&new_client->dev, &dev_attr_alarms)))
+		goto error_remove_files;
+
+	data->class_dev = hwmon_device_register(&new_client->dev);
+	if (IS_ERR(data->class_dev)) {
+		err = PTR_ERR(data->class_dev);
+		goto error_remove_files;
+	}
 
 	return 0;
 
-error_detach:
+error_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &smsc47m1_group);
 	i2c_detach_client(new_client);
 error_free:
 	kfree(data);

@@ -501,6 +542,7 @@
 	int err;
 
 	hwmon_device_unregister(data->class_dev);
+	sysfs_remove_group(&client->dev.kobj, &smsc47m1_group);
 
 	if ((err = i2c_detach_client(client)))
 		return err;

drivers/hwmon/smsc47m192.c +85 ~~-65~~

183 lines not on this page · raw message

Signature · 1 line

Jean Delvare

Mark M. Hoffman

2006-09-23 17:59 UTC #4 lore raw

PATCH 1/1 hwmon: unchecked return status fixes

In reply to Jean Delvare

Hi Jean:

Quoted 11 lines · Jean Delvare

Fix up 5 more hwmon drivers so that they no longer ignore return status from device_create_file(). Untested.
Signed-off-by Jean Delvare <khali at linux-fr.org>
---
 drivers/hwmon/atxp1.c   |   24 +++++++++--
 drivers/hwmon/ds1621.c  |   27 +++++++++----
 drivers/hwmon/max1619.c |   32 +++++++++++----
 drivers/hwmon/sis5595.c |  100 +++++++++++++++++++++++++++++++++--------------
 drivers/hwmon/via686a.c |   82 +++++++++++++++++++++++----------------
 5 files changed, 180 insertions(+), 85 deletions(-)

You should add '#include <linux/sysfs.h>' to all of these. Also...

Quoted 7 lines

drivers/hwmon/sis5595.c +1 -0

@@ -566,43 +610,37 @@
 	}
 
 	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &sis5595_group)))

drivers/hwmon/sis5595.c line 623

Quoted 10 lines

drivers/hwmon/sis5595.c +10 -0

+		goto exit_detach;
+	if (data->maxins = 4) {
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_min))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_max)))
+			goto exit_remove_files;
+	} else {

This else implies data->maxins = 3 right? Just checking.

Quoted 43 lines

drivers/hwmon/sis5595.c +10 ~~-28~~

+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_max))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_max_hyst)))
+			goto exit_remove_files;
+	}
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_in0_input);
-	device_create_file(&new_client->dev, &dev_attr_in0_min);
-	device_create_file(&new_client->dev, &dev_attr_in0_max);
-	device_create_file(&new_client->dev, &dev_attr_in1_input);
-	device_create_file(&new_client->dev, &dev_attr_in1_min);
-	device_create_file(&new_client->dev, &dev_attr_in1_max);
-	device_create_file(&new_client->dev, &dev_attr_in2_input);
-	device_create_file(&new_client->dev, &dev_attr_in2_min);
-	device_create_file(&new_client->dev, &dev_attr_in2_max);
-	device_create_file(&new_client->dev, &dev_attr_in3_input);
-	device_create_file(&new_client->dev, &dev_attr_in3_min);
-	device_create_file(&new_client->dev, &dev_attr_in3_max);
-	if (data->maxins = 4) {
-		device_create_file(&new_client->dev, &dev_attr_in4_input);
-		device_create_file(&new_client->dev, &dev_attr_in4_min);
-		device_create_file(&new_client->dev, &dev_attr_in4_max);
-	}
-	device_create_file(&new_client->dev, &dev_attr_fan1_input);
-	device_create_file(&new_client->dev, &dev_attr_fan1_min);
-	device_create_file(&new_client->dev, &dev_attr_fan1_div);
-	device_create_file(&new_client->dev, &dev_attr_fan2_input);
-	device_create_file(&new_client->dev, &dev_attr_fan2_min);
-	device_create_file(&new_client->dev, &dev_attr_fan2_div);
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-	if (data->maxins = 3) {
-		device_create_file(&new_client->dev, &dev_attr_temp1_input);
-		device_create_file(&new_client->dev, &dev_attr_temp1_max);

drivers/hwmon/sis5595.c line 646

Quoted 10 lines

drivers/hwmon/sis5595.c +3 -2

-		device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
-	}
 	return 0;
 
+exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &sis5595_group);
+	sysfs_remove_group(&new_client->dev.kobj, &sis5595_group_opt);
 exit_detach:
 	i2c_detach_client(new_client);
 exit_free:

Regards,

Signature · 2 lines

Mark M. Hoffman
mhoffman at lightlink.com

Jean Delvare

author

2006-09-23 20:53 UTC #5 lore raw

PATCH 1/1 hwmon: unchecked return status fixes

In reply to Jean Delvare

Mark,

Quoted 13 lines · Jean Delvare

Quoted 11 lines
Fix up 5 more hwmon drivers so that they no longer ignore return status from device_create_file(). Untested.
Signed-off-by Jean Delvare <khali at linux-fr.org>
---
 drivers/hwmon/atxp1.c   |   24 +++++++++--
 drivers/hwmon/ds1621.c  |   27 +++++++++----
 drivers/hwmon/max1619.c |   32 +++++++++++----
 drivers/hwmon/sis5595.c |  100 +++++++++++++++++++++++++++++++++--------------
 drivers/hwmon/via686a.c |   82 +++++++++++++++++++++++----------------
 5 files changed, 180 insertions(+), 85 deletions(-)

Quoted 1 line

You should add '#include <linux/sysfs.h>' to all of these. Also...

Yes, you're right. I've done so.

BTW, there are a lot of drivers missing it as well (basically all the drivers which were converted early, including all of yours.) Should I edit all the patches before I send them to Greg?

Quoted 5 lines

Quoted 5 lines
drivers/hwmon/sis5595.c +0 -0
@@ -566,43 +610,37 @@
 	}
 

Quoted 14 lines

drivers/hwmon/sis5595.c line 623

Quoted 12 lines

drivers/hwmon/sis5595.c +11 -0

 	/* Register sysfs hooks */
+	if ((err = sysfs_create_group(&new_client->dev.kobj, &sis5595_group)))
+		goto exit_detach;
+	if (data->maxins = 4) {
+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_min))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_in4_max)))
+			goto exit_remove_files;
+	} else {

This else implies data->maxins = 3 right? Just checking.

I assumed so, but you're right to ask. Fortunately, after checking, it appears to be correct.

Quoted 47 lines

drivers/hwmon/sis5595.c +10 ~~-30~~

+		if ((err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_input))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_max))
+		 || (err = device_create_file(&new_client->dev,
+					      &dev_attr_temp1_max_hyst)))
+			goto exit_remove_files;
+	}
+
 	data->class_dev = hwmon_device_register(&new_client->dev);
 	if (IS_ERR(data->class_dev)) {
 		err = PTR_ERR(data->class_dev);
-		goto exit_detach;
+		goto exit_remove_files;
 	}
 
-	device_create_file(&new_client->dev, &dev_attr_in0_input);
-	device_create_file(&new_client->dev, &dev_attr_in0_min);
-	device_create_file(&new_client->dev, &dev_attr_in0_max);
-	device_create_file(&new_client->dev, &dev_attr_in1_input);
-	device_create_file(&new_client->dev, &dev_attr_in1_min);
-	device_create_file(&new_client->dev, &dev_attr_in1_max);
-	device_create_file(&new_client->dev, &dev_attr_in2_input);
-	device_create_file(&new_client->dev, &dev_attr_in2_min);
-	device_create_file(&new_client->dev, &dev_attr_in2_max);
-	device_create_file(&new_client->dev, &dev_attr_in3_input);
-	device_create_file(&new_client->dev, &dev_attr_in3_min);
-	device_create_file(&new_client->dev, &dev_attr_in3_max);
-	if (data->maxins = 4) {
-		device_create_file(&new_client->dev, &dev_attr_in4_input);
-		device_create_file(&new_client->dev, &dev_attr_in4_min);
-		device_create_file(&new_client->dev, &dev_attr_in4_max);
-	}
-	device_create_file(&new_client->dev, &dev_attr_fan1_input);
-	device_create_file(&new_client->dev, &dev_attr_fan1_min);
-	device_create_file(&new_client->dev, &dev_attr_fan1_div);
-	device_create_file(&new_client->dev, &dev_attr_fan2_input);
-	device_create_file(&new_client->dev, &dev_attr_fan2_min);
-	device_create_file(&new_client->dev, &dev_attr_fan2_div);
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-	if (data->maxins = 3) {
-		device_create_file(&new_client->dev, &dev_attr_temp1_input);
-		device_create_file(&new_client->dev, &dev_attr_temp1_max);
-		device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
-	}
 	return 0;

Quoted 6 lines

drivers/hwmon/sis5595.c line 646

Quoted 6 lines

drivers/hwmon/sis5595.c +3 -0

+exit_remove_files:
+	sysfs_remove_group(&new_client->dev.kobj, &sis5595_group);
+	sysfs_remove_group(&new_client->dev.kobj, &sis5595_group_opt);
 exit_detach:
 	i2c_detach_client(new_client);
 exit_free:

Thanks for the review!

Signature · 1 line

Jean Delvare